Feed-water-regulator system



V. V. VEENSCHOTEN.

FEED WATER REGULATOR SYSTEM.

APPLICATION FILED AUG-15, 1918.

1,340,846. I Patented May 18, 1920.

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V "ED STATES PATENT OFFICE."

. VINCENT V. VEENSGHOTEN, OF ERIE, PENNSY LVANIA, ASSIGNOR TO NORTHERNEQUIPMENT COMPANY, OF ERIE, PENNSYLVANIA, A

SYLVANIA.

To all ivhom it may concern:

Be it known that I, VINCENT V. VnnN- SCHOTEN, a citizen of=the UnitedStates, re-

siding at Erie, .in the county of Erie and State of Pennsylvania, haveinvented certain newv and useful Improvements in Feed- Water-RegulatorSystems, of which the following is a specification.

This invention relates to feed-water regu-' lator systems, and.particularly to such systems which include float regulators whlchoperate pilotvalves; and it has for its object the combination with theregulator ofa device which controls the operation of the feed-watervalve so as to materially reduce the oscillations-of the water level inthe boiler, and also to decrease materially the number of times thepilot valve is operated.

Other objects of'the invention will be apparent from a consideration ofthe accom-' panying drawings and the descriptions thereof. I

' Of the accompanying drawings- Figure 1 is an elevation, more or lessdiagrammatic, of a feed-water regulator system. embodying features of myinvention;

Fig. 2 is a central sectional view of the regulator systemf Fig. 3 is acentral sectional view of the feed-water valve controller of the systemand of the feed-water valve controlled Fig. 4 is anelevation' of thecontroller. The controller comprises a cylinder 5,

having elastic walls. This cylinder may be of any suitable constructionor material. I

prefer rubber for the material; the diameter and length of the cylinderbeing determined by the particular use thereof. One'end of the cylinderis hermetically closed in any suitable manner as by means of the rubber6, and it is supported by means of a disk 7. The otherfend of thecylinder is closed also by any suitable means, for instance by clampingthe flange 8"ofthe cylinder between the plate 9 and the disk 10;Encircling the cylinder is a. coil 11, which is adapted to preventtransverse expansion of the cylinder when pressure is exerted iwith-Iain. Thecylinder and coil are encircled in a resilient coil 12. Thecoil 12 is positioned between the plates 13 and 14. Plate 14, by meansof the rods 15, Fig. 4, is fixed to the CORPORATION OF PENN- vSpecification of Letters Patent. Patented luay 18, 1920, Application filed August 15, 1918. Serial No. 249,977.

later-'19; and projectingdownwardly from the disk 7 is a rod 20 fixed tothe cross bar 21; and the cross bar 21, by means of,

the rods 22, has 'a fixed spaced relation with the disk 13. Pivoted tothe rod 20, by means of a link 23, is an arm 24 adapted to operate theplunger 25 in the valve 26. The. tube 17 is fixed to the pipe 27 bymeans of the bracket 28. 7

A consideration of the structure will show that, as fluid pressure isexerted on the interior of the cylinder 5, the cylinder will forcedownwardly the disk 7 and, hence, will tend to force downwardly the rod20, and thus to force inwardly the plunger 25- toward the closedposition. The cross bar 21 will also be forced downwardly, but, by meansof the rods 22 and plate 13, will be opposed by the compression of thecoil spring 12. On the other hand, as the fluid pressure in the cylinderdecreases, the coil spring will gradually force upwardly the plate 13,and hence will tend to bring the plunger back to its open position. Asthe cylinder 5 expands or contracts the supporting coil 11 will expandand contract ac-' cordingly, and -,will at all times prevent transverseexpansion of the cylinder. In this instance the controller is used inanordinary steam boiler float feed-Water regulator system comprising thefloat 30, adapted to open in a well known manner, a pilot valve 31, whenthe water rises abnormally. The pilot valve allows steam pressure to beexerted oncondensed water in the pipe 18, and in the cylinder 5. Thepres- I predetermined water level the float, sinking in-the casing 32,allows the valve 31 to close it and at the same time open theexhaust'valve 33. The steam then exhausts from .the chamber 34, and thepressure on the water in the cylinder 5 being thus withdrawn, thecylinder contracts and allows the spring 12 p v to open the feed watervalve26. i It is common with pilot valve float regulators to.use anordinary movable diaphragm in a rigid casing for operating thefeed-water valve through a stuffing box. As a consequence, the movementof the diaphragm being limited, the valve is fre-. quently opened wideor closed entirely as soon as the friction of the stufling box isovercome and any operation occurs. With my resilient cylinder the plate7 and hence the rod 20, may be made to move through a very materialdistance, depending upon the length of the cylinder; and hence themovement will be gradual and the valve plunger may also. be movedgradually toward the open or closed position. This'efiect is increasedby the use of the rod 40, which connects the external valve operatingmeans with the internal means, and is arranged to rotate instead ofreciprocate; so that much less force is required to operate the plunger.hen steam is admitted into the chamber 3'4, the' valve 26 will begin toclose before the full steam pressure is reached, thus quickly affectingthe water flow and the" water level, and frequently bringing the levelback to normal before the valve is eninder 5 as to keep it at all timesfull of condensed water, and reduce the passage way 41 in the tube 17,so that a material lengthof time is required to force water into and outof the cylinder. While, as thus arranged, the, pressure of the steamwill quickly combination of a float feed-water regulator cause theplunger 25 to begin to close, yet the time required for much water topass into the cylinder will increase the time required'to fully closethe ,valve, and hence the over-running of the water level and the numberof operations of the pilot valve will be reduced still further. In orderto control this effect .I place a needle valve 42 in the passageway 41so as to vary the restriction of the passageway at pleasure; and by theuse ofthe by-pass'45 and the valve 46 a continuous flow of water may beallowed to pass into the boiler, and thus the number of operations ofthe pilot valve is further reduced.

I claim as my invention:

1. In a feed-water regulator system the having a pilot valve; a vesselhaving elastic walls, said vessel being adapted to receive a fluid underpressure and to be materially elongated thereby and being operativelyrelated to said pilot valve; a feed-water valve having a plunger; andmeans, comprising a rotatable member, connecting. said plunger with saidvessel.

2. In a feed-water regulator system the combination of a floatfeed-water regulator having a pilot valve; a vessel having elasticwalls, said vessel being adapted to receive a fluid under pressurethrough a restricted passageway and to be elongated by said fluid andbeing operatively related to said pilot valve; a feed-water valve havinga plunger; and means, comprising a rotatable member, connecting saidplunger with said vessel.

3. In a feed-water regulator system thecombination of a float feed-waterregulator having a pilot valve; a vessel having elastic walls, saidvessel being adapted to receive a fluid under pressure through arestricted passageway and to be elon fed by said fluid and beingoperatively r ated to said pilot valve; a feed-water valve having aplunger; means, comprising a rotatable member, connecting said plungerwith said vessel, and means for varying the magnitude of said passaeway. O V I 4. n a feed-water regulator system the combination of afloat feed-water regulator having a pilot valve; a cylinder havinglongitudinally resilient walls, said cylinder being operatively relatedto said valve and be: ing adapted to receive a fluid under pressure; anda- ,feed-water valve operatively connected with said cylinder.

5. The combination of a feed-water regu-' lator,.a pilot valvecontrolling a fluidunder pressure operatively connected with saidregulator, a cylinder having'longitudinally resilient walls, saidcylinder being adapted to receive a fluid under pressure and belngoperatively related to said valve, and a feedwater valve operativelyconnected with said cylinder. Y

6. The combination of a boiler, a feedwater regulator connected withsaid boiler,

a pilot valve controlling a fluid under pressure, a cylinder havinglongitudinally elastic walls, said valve being operatively related tosaid regula'torand to saidcylinder, and a balanced feed-water valveoperatively connected to said boiler and to said'cylinder. h In1testimony whereof, I hereunto Set my VINCENT v. vEEusoHoTEN;

\ Witnesses; I

WILLIAM E. Hm'r, J OHANNA SPANGGAA'RJ).

